Flap dissociating knife with replaceable blade

Abstract

The utility model discloses a flap dissociation knife with a replaceable blade, which relates to the field of medical instruments and comprises a knife rest, a knife head is arranged at the front end of the knife rest, the blade is mounted on the knife head in a clamping groove manner, and the rear end of the knife rest is connected with a handle. The surface of the knife rest is provided with first anti-skidding grains. The knife head and the blade are connected in a clamping groove mode, the blade can be replaced at any time according to operation requirements and different patients, the service life of the flap dissociation knife is prolonged, and operation efficiency is improved. The blade, the knife head and the knife rest are distributed in an arc shape after being assembled, so that the surgical operation is smoother; the surface of the knife rest is provided with first anti-skid grains which are convenient for near-holding use, the surface of the handle is provided with second anti-skid grains which are convenient for holding the far end of the handle for surgical operation, and both far-holding and near-holding are anti-skid; cutter entering scales are marked on the surface of the knife rest, the distance of the free knife entering the subcutaneous part can be known in time during operation, and operation precision is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a skin flap free knife with replaceable blades. Background Art

[0002] Breast cosmetic surgery is one of the most common cosmetic surgeries. Regardless of the type of surgery, the breast skin must first be separated from the subcutaneous fat layer to form a flap. Various surgical procedures have high requirements for flap freedom. If the flap is too thin, the skin and the arteries and veins underneath it are easily separated, resulting in poor blood circulation in the flap and causing flap necrosis. Existing flap freedom knives generally use an integrated structure of the blade and the blade, which cannot be replaced according to different surgical needs. Once the blade is damaged, the entire scalpel is scrapped. In addition, most of the current surgeries use ordinary scalpels for flap freedom. Since the existing scalpels are fixedly held and the distance between the handle and the blade is far, they rely too much on the surgeon's skills and experience when dealing with some tissues that need to be removed at close range. In addition, ordinary scalpels take a long time to free the flap, which results in longer surgery time and affects surgical efficiency. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a flap free knife with replaceable blades, the blades of which can be replaced at any time according to surgical requirements and different patients, thereby improving the efficiency of the surgery.

[0004] The purpose of the utility model is achieved through the following technical scheme: this flap free knife with replaceable blades includes a knife holder, a knife head is arranged at the front end of the knife holder, the blade is installed in a slot type on the knife head, and the rear end of the knife holder is connected to a handle; a first anti-slip pattern is arranged on the surface of the knife holder, and a second anti-slip pattern is arranged on the surface of the handle.

[0005] As a further technical solution, the blade includes a blade body, a slide groove is provided along the length direction of the blade body, and a blade head protrusion arranged at the end of the blade head is inserted into the slide groove.

[0006] As a further technical solution, the slide groove includes an open section and a narrowed section with a width reduced relative to the open section. An outer edge groove is opened on the outer wall of the front end of the cutter head protrusion, and the outer edge of the narrowed section is relatively slidably inserted into the outer edge groove, and the rear end of the cutter head protrusion is inserted into the open section.

[0007] As a further technical solution, an arc-shaped blade is provided at the lower part of the blade body, a straight blade back is provided at the back of the blade body, and a stopper is provided at the tail of the blade body for being inserted into a limiting groove formed at the connection between the blade head and the blade holder.

[0008] As a further technical solution, the blade, the cutter head and the cutter holder are distributed in an arc shape after being assembled.

[0009] As a further technical solution, a groove is opened along the surface of the tool holder, and a plurality of pits are symmetrically arranged on both sides of the groove to form the first anti-slip pattern.

[0010] As a further technical solution, a knife entry scale is marked along the surface of the tool holder, and the knife entry scale extends from the connection between the tool head and the tool holder to the rear end of the tool holder.

[0011] As a further technical solution, the second anti-slip pattern is in a grid shape.

[0012] The beneficial effects of the utility model are:

[0013] 1. The knife head and blade are connected by a slot-type connection. The blade can be replaced at any time according to surgical needs and different patients, which prolongs the service life of the flap free knife and improves the efficiency of the surgery;

[0014] 2. The blade, knife head and knife holder are arranged in an arc shape after assembly, making the surgical operation smoother;

[0015] 3. The surface of the knife holder is provided with a first anti-slip pattern, which is convenient for close grip use. The surface of the handle is provided with a second anti-slip pattern, which is convenient for holding the far end of the handle for surgical operation. Both far grip and close grip can prevent slipping.

[0016] 4. The surface of the knife holder is marked with knife entry scales, which makes it easy to know how far the free knife enters the subcutaneous tissue during surgery and improve surgical accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the blade in the utility model.

[0019] Figure 3 This is a front view of the connection structure of the knife head, knife holder and handle in the utility model.

[0020] Figure 4 It is a top view of the connection structure of the knife head, knife holder and handle in the utility model.

[0021] Figure 5 for Figure 4 A partial enlarged schematic diagram of area A in the middle.

[0022] Explanation of the accompanying drawings: blade 1, blade edge 11, blade body 12, slide groove 121, open section 1211, narrowed section 1212, outer edge 1213, stop portion 122, blade back 13, blade head 2, blade head protrusion 21, outer edge groove 211, limiting groove 22, blade holder 3, first anti-slip pattern 31, knife entry scale 32, groove 33, handle 4, second anti-slip pattern 41. DETAILED DESCRIPTION

[0023] The utility model will be described in detail below with reference to the accompanying drawings:

[0024] Example: As attached Figures 1 to 5 As shown, this flap free knife with replaceable blades includes a blade 1, a blade edge 11, a blade body 12, a slide groove 121, an open section 1211, a narrowed section 1212, an outer edge 1213, a stopper 122, a knife back 13, a knife head 2, a knife head protrusion 21, an outer edge groove 211, a limiting groove 22, a knife holder 3, a first anti-slip pattern 31, a knife entry scale 32, a groove 33, a handle 4 and a second anti-slip pattern 41.

[0025] Reference Figure 1 A cutter head 2 is arranged at the front end of the cutter holder 3, a blade 1 is detachably mounted on the cutter head 2 through a slot, and a handle 4 is connected to the rear end of the cutter holder 3. Preferably, the blade 1, the cutter head 2 and the cutter holder 3 are arranged in an arc shape after being assembled, which is convenient for surgical operation.

[0026] like Figure 2 As shown, the blade 1 includes a blade body 12, and a slide groove 121 is provided along the length direction of the blade body 12. The slide groove 121 includes an open section 1211 (located at Figure 2 right side) and a narrowing section 1212 (located at Figure 2 Left side), such as Figure 4 , 5 As shown, an outer edge slot 211 is provided on the outer wall of the front end of the blade protrusion 21, so that the outer edge 1213 of the narrowed section 1212 can be relatively slidably inserted into the outer edge slot 211, and the rear end of the blade protrusion 21 is inserted into the open section 1211. During surgery, the blade can be replaced at any time according to surgical needs and different patients, thereby extending the service life of the flap free knife and improving the efficiency of the surgery.

[0027] Furthermore, an arc-shaped blade 11 is provided at the lower part of the blade body 12, a straight blade back 13 is provided at the back of the blade body 12, and a stopper 122 is provided at the tail of the blade body 12, which can be inserted into a limiting groove 22 formed at the connection between the blade head 2 and the blade holder 3, as shown in FIG. Figure 4 , 5 As shown, fixation and limiting are achieved.

[0028] Preferably, if Figure 1 , 3 As shown, a groove 33 is provided along the surface of the tool holder 3, and a plurality of pits are symmetrically arranged on both sides of the groove 33 to form a first anti-slip pattern 31, which is convenient for close grip. A grid-like second anti-slip pattern 41 is provided on the surface of the handle 4, which is convenient for holding the distal end of the handle for surgical operation, so that it can prevent slipping during both close and far grip operations.

[0029] The surface of the knife holder 3 is marked with a knife entry scale 32, which extends from the connection between the knife head 2 and the knife holder 3 to the rear end of the knife holder 3, so as to timely understand how far the free knife enters the subcutaneous tissue during surgery and improve surgical accuracy.

[0030] The working process of the utility model is as follows: before the operation, a suitable blade 1 is selected according to the operation requirements and different patients, the front end of the blade head protrusion 21 is aligned and inserted into the open section 1211, and then the outer edge slot 211 is used to slide along the outer edge 1213 of the narrowing section 1212, so that the front end of the blade head protrusion 21 is gradually inserted into the narrowing section 1212, and the rear end of the blade head protrusion 21 is inserted into the open section 1211, so as to achieve the fixation of the blade 1 and the blade head 2. During the operation, the distal end of the handle 4 can be held for operation, and after the blade 1 penetrates into the subcutaneous tissue, the distance of the free blade entering the subcutaneous tissue can be timely understood through the knife entry scale 32, and at the same time, the first anti-slip pattern 31 of the knife holder 3 can be held for operation to achieve close grip and anti-slip.

[0031] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. A skin flap free knife with replaceable blades, characterized in that: The knife holder (3) comprises a knife head (2) arranged at the front end of the knife holder (3), a blade (1) being mounted in a slot on the knife head (2), and a handle (4) being connected to the rear end of the knife holder (3); a first anti-slip pattern (31) being arranged on the surface of the knife holder (3), and a second anti-slip pattern (41) being arranged on the surface of the handle (4).

2. The skin flap free knife with replaceable blade according to claim 1, characterized in that: The blade (1) comprises a blade body (12), a slide groove (121) is provided along the length direction of the blade body (12), and a blade head protrusion (21) arranged at the end of the blade head (2) is inserted into the slide groove (121).

3. The flap-free knife with replaceable blade according to claim 2, characterized in that: The slide groove (121) comprises an open section (1211) and a narrowed section (1212) whose width is reduced relative to the open section (1211); an outer edge clamping groove (211) is provided on the outer wall of the front end of the cutter head protrusion (21); an outer edge (1213) of the narrowed section (1212) is relatively slidably clamped into the outer edge clamping groove (211); and a rear end of the cutter head protrusion (21) is clamped into the open section (1211).

4. The flap free knife with replaceable blade according to claim 2 or 3, characterized in that: The lower part of the blade body (12) is provided with an arc-shaped blade edge (11), the back of the blade body (12) is provided with a straight blade back (13), and the rear part of the blade body (12) is provided with a stopper (122) for being inserted into a limiting groove (22) formed at the connection between the blade head (2) and the blade holder (3).

5. The skin flap free knife with replaceable blade according to claim 1, characterized in that: The blade (1), the blade head (2) and the blade holder (3) are arranged in an arc shape after being assembled.

6. The skin flap free knife with replaceable blade according to claim 1, characterized in that: A groove (33) is provided along the surface of the tool holder (3), and a plurality of pits are symmetrically arranged on both sides of the groove (33) to form the first anti-slip pattern (31).

7. The skin flap free knife with replaceable blade according to claim 1, characterized in that: A knife entry scale (32) is marked along the surface of the knife holder (3), and the knife entry scale (32) extends from the connection between the knife head (2) and the knife holder (3) to the rear end of the knife holder (3).

8. The skin flap free knife with replaceable blade according to claim 1, characterized in that: The second anti-slip pattern (41) is in a grid shape.

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